View Full Version : Dump Valve or Diverter Valve?

10-09-2006, 01:14 PM
what is the difference between the two?
thank you in advance.

10-09-2006, 01:54 PM
search... for the love of god...

a dump valve vents into the air, a diverter valve, diverts, air back into the turbo inlet pipe...

10-09-2006, 02:00 PM
flame on guys..lol

10-09-2006, 02:02 PM
Diverter valve/DV, Bypass Valve/BPV... recirculates air back into the intake so the MAF can meter it.

Dump valve, Blowoff Valve/BOV.. vents air to atmosphere, unmetered by the MAF. Venting is frowned upon for the most part with A4s. With DSMs (I'm most familiar with) there were a few extra steps and lots o $ needed to run a BOV correctly. I can explain more if you need [:)]

10-09-2006, 02:06 PM
have you tried running neither? i heard its a ~5 hp gain

10-09-2006, 02:08 PM
Originally posted by iscaspar
what is the difference between the two?
thank you in advance.

that info can be found here.

CLICK (http://www.google.com/)

10-09-2006, 08:43 PM
there all the same thing. They just are nicknamed based on what they do with the pressure when throttle is closing/closed.

10-09-2006, 10:02 PM
i love it when these posts come up...

Euro Avant
10-09-2006, 11:26 PM
Just stick with diverter valve...

However I heard HKS sequential is popular in B6 scene, seems to be no issue, if you like the sound.

I don't use BOV, so I can't verify this statment.

10-10-2006, 06:14 AM